Twol Different Issues that I am having.

[Feint90]

The reason your J and U keys are not working is because they are bound in IsBoxer. So whenever you press that button in game, it will trigger in IsBoxer.

Your J key is mapped to Face Toward Target
Your U key is mapped to Generated by Mapped Key Wizard with 'Straight Key Broadcast'

You can either disable mapped keys while you need those keys, but this will disable your entire IsBoxer Setup, or you can rebind those keys to a key you want/don't use.

If you ever want to know if you bound a key and can't find it in IsBoxer, open your profile in a textEditor and search for <key>The key you want to look for</key> e.g. <key>U</key>.

As far as the escort quest go. These were a pain in the butt in Vanilla and they still are in Classic. You want to make sure your characters are all on the same step of the escort and depending on whether the escort begins as soon as you accept, or you get a menu option you want to either accept on 1 and share to your team or accept on all and then start the escort.

Whether or not you get credit is not something you can really help with. Like I said, they were a pain in vanilla and they still are.